[KAFKA-15969] Align RemoteStorageThreadPool metrics name with KIP-405

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 3.6.0
• Fix Version/s: 3.8.0
• Component/s: metrics
• Assignee: Unassigned
• Reporter: Lixin Yao
• Created: 04/Dec/23 17:08
• Updated: 26/Dec/23 20:01

Description

In KIP-405, there are 2 metrics defined below:
^{kafka.log.remote:type=RemoteStorageThreadPool, name=RemoteLogReaderTaskQueueSize}
and
^{kafka.log.remote:type=RemoteStorageThreadPool, name=RemoteLogReaderAvgIdlePercent}

However, in Kafka 3.6 release, the actual metrics exposes are:
^{org.apache.kafka.storage.internals.log:name=RemoteLogReaderAvgIdlePercent,type=RemoteStorageThreadPool
org.apache.kafka.storage.internals.log:name=RemoteLogReaderTaskQueueSize,type=RemoteStorageThreadPool}

The problem is the bean domain name is changed from ^{kafka.log.remote} to ^{org.apache.kafka.storage.internals.log}. And the type name is also changed.

We should either update the metrics path in KIP, or fix the path in the code.

Issue Links

• relates to: KAFKA-15420 Kafka Tiered Storage V1